Tennessee Code Title 36. Domestic Relations § 36-7-302

(a) After a deploying parent receives notice of deployment and until the deployment terminates, a court may issue a temporary order granting custodial responsibility unless prohibited by the Service Members Civil Relief Act (50 U.S.C. Appendix Sections 521 and 522), and may not issue a permanent order granting custodial responsibility without the consent of the deploying parent.

(b) At any time after a deploying parent receives notice of deployment, either parent may file an action regarding custodial responsibility of a child during deployment. A motion must be filed in a pending proceeding for custodial responsibility in a court with jurisdiction under § 36-7-104 or, if there is no pending proceeding in a court with jurisdiction under § 36-7-104, in a new complaint for granting custodial responsibility during deployment.